I'm not saying it's depression because of the way the team is playing or anything, but depression will make people stop finding enjoyment in things that they usually enjoy.
If that is the case, then maybe not watching as much TV will be good for him, maybe more active. But sometimes medicine for depression can be needed also. FWIW
Come to think of it. Maybe there are a lot of people on CB that should be on medicine...What do you say Nashty?